Tubing-jar.



PATENTED JUNE 2'7, 1905.

J. T. GALLANAN.

TUBING JAR.

APPLICATION FILED OCT. 12.1904.

R 0 T N E V m I UNITED STATES Patented June 27, 1905.

PATENT OFFICE.

JAMES-T. OALLANAN, OF PARKERSBURG, WEST VIRGINIA, ASSIGNOR TO THEPARKERSBURG MACHINE COMPANY, OF PARKERSBURG, WEST VIRGINIA, ACORPORATION OF WEST VIRGINIA.

TUBING-JAR.

SPECIFICATION forming part of Letters Patent No. 793,414, dated June 27,1905.

Application filed October 12, 1904. Serial No. 228,219.

[ a whom it may concern.-

Be it known that 1, JAMES T. OALLANAN, a citizen of the United States,residing at Parkersburg, in the county of Wood and State of WestVirginia, have invented certain new and useful Improvements inTubing-Jars, of which the following is a specification, reference beinghad therein to the accompanying drawings.

This invention relates to tubing or casing jars wherein telescopingtubular members are employed which are adapted to be moved one on theother for the purpose of jarring and loosening the tubing or casing whenthe same I5 is to be removed from a well; and the primary object is toprovide improved packing means for sealing the joint between thetelescoping members when closed together or collapsed.

The invention is here embodied in a tubular 2o jar which constitutes atelescoping portion of the well-tube or well-casing, as the case maybe.

In the accompanying drawings, Figure 1 is a vertical sectional view ofmy improvements, the parts being shown in the position which they assumewhen being lowered in a well. Fig. 2 is a similar View showing therelation of itlhe parts when in operative position in a we The improveddevice may be inserted at any convenient point between the separatedsections 2 and 2 of the tubing or casing. Secured to section 2 is head3, threaded internally to receive the cylinder or casing 4. The upperend of this casing is closed by head 5,

3 5 and movable therethrough is tube 6, depending from tubing-section 2.Secured to the lower extremity of tube 6 and within cylinder 4 is heador collar 7, which preferably has its lower end tapered or coned, asshown at 7.

In lowering the string of tubing into a well the parts are in theposition indicated in Fig.

1. When the downward movement of tubesection 2 is arrested by strikingthe bottom of the well, tubing-section 2 and tube 6 continue to descenduntil the tapered head 7 reaches the bottom of cylinder 4, where itencounters the soft-metal seat 8, fixed on internal shoulder 9 of head3. Lead is preferably used for this soft-metal seat, and with the partsmoved together, as in Fig. 2, a perfect seal is formed and none of thefluid passing through tubing 2, 2, and 6 can escapeinto cylinder 4. Toremove the tubing, the same is simplydrawn upward from the positionindicated in Fig. 2 to that shown in Fig. 1, with head 7 lifting oncylinder cap or head 5 to raise the tubing below, as will be understood.If the lower portion of the tubing resists the upward pull, as it isvery apt to do if it carries a packer, tube-sections 2 and 6 are simplylowered and head 7 caused to strike upward against head 5 in mannersimilar to the operation of jars, (well known in the art,) and thisstriking or jarring may be continued until the packer or otherobstruction has been loosened, when all the tubing and the packer may beremoved from the well.

While the improvement is designed primarily for loosening pull-resistingpackers, it may be used to advantage for loosening tubing that may havebecome fast in the well from any cause.

I claim 1. Tubing-jars comprising a cylinder having top and bottomheads, a beveled soft-metal seat-forming ring 8 carried by the lowerhead, a tube movable through the upper head, and a stop-forming collarcarried by the tube and adapted to cooperate with the top cylinderheadwhen jarring, the lower end of said collar being tapered to cooperatewith beveled ring 8 in forming a seal.

2. A tubing-jar comprising a cylinder having a head at its upper end, asoft-metal seat in the 'lower end of the cylinder, a tube adapted toreciprocate through the cylinder-head and at its upper end having atubing connection, and an enlargement at the lower end of thetelescoping tube adapted when raised to cooperate with the cylinder-headand when lowered adapted to rest on the soft-metal seat.

3. A tubingjar comprising a cylinder, a head at the lower end of thecylinder, a softmetal seat within the head, a head for the upper end ofthe cylinder,tube 6 movable through the upper head, and tapered head 7carried by the lower extremity of tube 6 for preventing the withdrawalof the latter through the upper head and for resting on the soft-metalseat when said tube is in lowered position.

4. Tubing-jars comprising cylinder 4: having a head at its upper end,tube 6 movable through the head and within the cylinder a distancecorresponding to the length of the latter, an annular stop carried bythe lower end of tube 6 for engaging said head, and a seal-forming seatin the lower end of the cylinder for receiving the lower extremity ofsaid tube when in lowered position.

5. Tubing-jars comprising cylinder 4 having a head at its upper end, thelower end of the cylinder being formed with an internal cylinder-head.

In testimony whereof I afiix my signature in presence of two witnesses.

JAMES T. CALLANAN.

Witnesses:

J. M. NEsBIT, ALEX. S. MABON.

